1. Institute for Addiction Science, University of Southern California, Los Angeles, CA, USA
2. Department of Preventive Medicine, University of Southern California Keck School of Medicine, Los Angeles, CA, USA
3. Department of Biostatistics, College of Public Health, University of Nebraska Medical Center, Omaha, NE, USA
4. University of Vermont Center on Behavior and Health, Burlington, VT, USA
5. Department of Psychiatry, University of Vermont Center on Behavior and Health, Burlington, VT, USA
6. Psychological Science, University of Vermont Center on Behavior and Health, Burlington, VT, USA